Apparatus and method for the production of ozone.



J. STEYNIS.

APPARATUS AND METHOD FOR THE PRODUCTION OF OZONE. APPLICATION FILEDurm'o, 1912.

1,066,67% Patented July 8, 1913.

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J. STBYNIS. APPARATUS AND METHOD FOR THE vnonucwron or OZONE.APPLIOATIOH FILED JAILZO, 1912.

1 066 674, Patented July 8, 1913.

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JAN STEYNIS, OF NEW YORK, N. Y., ASSIGNOR 'IO STEYNIS OZONE COMPANY, ACORIPORATION OF NEW YORK.

APPARATUS AND METHOD FOR THE PRODUCTION OF OZONE.

Specification of Letters Patent.

Patented July 8, 1913.

Application filed January 20, 1912. Serial No. 672,314:

To all whom it may concern:

Be it known that 1, JAN STEYNIS, a subject of the Queen of theNetherlands, residing in the city, county, and State of New York, haveinvented certain new and useful Improvements in Apparatus and Methodsfor the Production of Ozone, of which the following is a full, clear,and complete disclosure.

My invention relates to apparatus and methods for producing ozone of thegeneral kind described in my Patents Nos. 906,081 and 906,4i68.

The objects of my invention are to provide apparatus for producing ozonewhich will be more reliable in operation than apparatus heretofore used,which will be compact and durable and which when used in practising myimproved method forming a part of this invention, will give an increasedefiiciency and a higher concentration than has heretofore been obtained.

Other objects and advantages will be pointed out in connection with thedescription of the invention.

In the drawing accompanying and forming a part of this specification, Ihave illus trated one embodiment of my improved apparatus.

Figure 1 of the drawing is a sectional view of the apparatus taken online 11 of the apparatus as shown in Fig. 3. Fig. 2 is a similarsectional view taken on the line 22 of Fig. 3 facing the other side ofthe apparatus from Fig. 1. Fig. 3 is an end elevation of the apparatusshown in Figs. 1 and 2, the end walls of the upper and lowercompartments being broken away. Fig. t is a sectional view taken on theline 38 of Fig. 1'. Fig. 5 is a sectional View taken on line L-i of Fig.1.

Referring in detail to the mechanism shown in these figures, the numeral1 designates a lower casing forming the base of the apparatus, whichcasing is divided into three compartments 2, 3 and a (see Fig. 5).

The numeral 5 designates an upper casing which is divided into fourcompartments 6, 7, 8 and 9 (see Fig. a).

Hollow electrodes 10,11, 12, 13, 14 and 15 arranged in two parallel rowsopen at 7, 8 and 9 and at their lower ends into the compartments 2, 3and 4 and the compartments serve to connect these hollow electrodes inseries with one another. The hollow electrodes each contain a dielectrictube 18 and each dielectric tube contains and sup ports an elongatedinner electrode 19 having discharge rings 20 spaced thereon. Thedischarges take place between the rings 20 and the hollow electrodesthrough the dielectric. The inner electrodes 1.) are slidably mounted inthe dielectric tubes so that in case they are damaged they can bereadily removed through the windows 26. At their lower ends thedielectric tubes extend a considerable distance below the lower ends ofthe electrodes and this is a desirable feature since it prevents theformation of arcs between the lower ends of the inner electrodes and thegrounded casing.

The numeral 16 designates the air intake, which is arranged to deliverair suitably cooled and dried into the compartment 6, from whichcompartment it passes down the electrode 10 into the lower compartment2, then up through the electrode 11 into the compartment 7, then downelectrode 12 into compartment 3, then up electrode 13 into compartment8, then down electrode 14 into compartment 1, and then up electrode 15and out of the machine at the opening 17. The flow of air through theapparatus is indicated in Figs. 1 and 2 by feathered arrows. The hollowelectrodes are surrounded by cooling jackets 27, 28, 29, 80, 31 and 32and these are connected in series with one another by conduits 33.

The numeral 34 designates the intake for the cooling medium, which,because of the series arrangement of the cooling jackets is caused topass through the. jackets 2T, 28, 29, 30, 31 and 32 in the order namedand out of the machine at the opening 85. The course of the coolingmedium through the jackets and the conduits connecting them is indicatedby unfeathered arrows. It will thus be seen that the cooling mediummoves along the hollow electrodes in a direction always OJPOSltG that ofthe air passing through tie electrodes.

Currentfor producing the discharges is supplied to the inner eleetrodesin the following manner. A conductor 21 enters the machine through theinsulator 22 and its lower end is connected to the horizontal conductors23, which extend into the several compartments and are disposed ad acentthe tops of the inner electrodes. The hor zontal conductors pass throughand are lnsulated from the walls of the compartments by insulators 40.Connections as pivoted to the horizontal conductors 23 convey thecurrent to the inner electrodes 19. These connections may be swung backas shown in Fig. 8, so as to permit the removal of electrodes l9.

The air forced into the machine through opening 16 while passingsuccesslvely, through the several electrodes is sub ected alternately toelectrical discharges from the rings 20 and to the cooling action of thecooling medium in the jackets. Since the air and cooling medium flow inopposite d1- rections throughout their courses, the temperature of theair may be maintamed substantially constant and this is importantbecause any rise in temperature of the a 1r while undergoing treatmentwould result 1n the destruction of some of the ozone previouslygenerated. By arranging the hollow electrodes in series, I insure auniform flow through all the electrodes which is not possible where thetubes are arranged i parallel.

With a machine of the kind above described I have obtained aconcentration of 7.26 grams of ozone per cubic meter of air treated,with an eificiency of 227 grams of ozone per kilowatt hour of currentused. I have also obtained a concentration of 9.52 grams of ozone percubic meter of air treated, with an efliciency of 171 grams of ozone perkilowatt of current consumed. These tests were made at an averagetemperature of 28 Fahrenheit. The difference in these results is due tothe ditference of flow of the air while passing through the machine. Inthe latter case the air was made to flow more slowly than in the first.The values of concentration and efiiciency in the above cases, Ibelieve, are considerably higher than have heretofore been obtainablewith the old methods and apparatus.

In practising my improved method and in operating the apparatus abovedescribed I preferably employ liquefied ammonia as a cooling medium andthe apparatus shown is preferably inclosed in a heat insulating case inorder that a low temperature may be maintained.

"The apparatus herein described has some features in common with but isan improvement on the apparatus described in my pendlng appllcationSerial No. 603,276,\

from which it is difierentiated by the series arrangement of the coolingand ozonizing tubes and by the replacing of the contact plates in thelower compartment of the ap paratus of the earlier application by theconductors and pivoted contacts all in the upper compartments. Byemploying conductors located in the upper casing 5, I am able to extendthe dielectric tubes a substantial distance below the lower end of theelectrodes, which is desirable for the reasons above pointed out.

The method herein described is an improvement on the method described inmy Patent N 0. 906368 in that while embodying the idea of alternatelyozonizing and cooling the air, it adds the additional feature of causingthe air to pass through tubes arranged in series and the cooling mediumto move in contact with the tubes but always in an opposite direction.

While I have described one embodiment of my apparatus and the preferredway of practising my method, still I am aware that these may be variedby those skilled in the art without departing from the scope of myclaims.

What I claim is:

1. The method of generating ozone which consists in progressivelysubjecting air to a series of electrical discharges while moving in onedirection and in simultaneously cooling the air and resultant ozone bysubjecting it to the action of a cooling fluld moving in the oppositedirection, substantially as described.

2. In an apparatus of the kind described, two sets of compartments, aplurality of hollow electrodes, one end of each electrode connected to acompartment of each set, whereby all of the compartments of one set areconnected through the hollow electrodes with all of the compartments ofthe other set for the purpose of passing air to be ozonizedtherethrough, substantially as described.

3. In an apparatus of the kind described, oppositely disposed casingseach divided into separate compartments, a plurality of hollowelectrodes connecting the compartments of one casing with thecompartments of the other casing and arranged in series with each otherfor the purpose of passing air to be ozonized therethrough,substantially as described.

4. In an apparatus of the kind described, a lower and an uppercompartment, hollow electrodes connecting the lower and uppercompartments and arranged in series, inner electrodes in the hollowelectrodes and separated therefrom by dielectric tubes which extendbelow both electrodes, substantially as described.

5. 'In an apparatus of the kind described,

two sets of compartments, hollow electrodes the electrodes and pivotedconnections exconnecting the compartments of one set with tending fromthe bars to the ends of the those of the other, and arranged in series,inner electrodes, substantially as described. 10

inner electrodes in the hollow electrodes and JAN STEYNIS. separatedtherefrom by dielectric tubes Witnesses: Y which extend below bothelectrodes, dis- WALTER S. JONES,

tributing bars disposed adjacent the ends of R. M. RICKETTS.

